CN106926710A - The regenerative braking energy reclaiming system and control method of electric automobile - Google Patents
The regenerative braking energy reclaiming system and control method of electric automobile Download PDFInfo
- Publication number
- CN106926710A CN106926710A CN201710269020.2A CN201710269020A CN106926710A CN 106926710 A CN106926710 A CN 106926710A CN 201710269020 A CN201710269020 A CN 201710269020A CN 106926710 A CN106926710 A CN 106926710A
- Authority
- CN
- China
- Prior art keywords
- accelerator pedal
- electric automobile
- torsion
- opening value
- braking energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/46—Drive Train control parameters related to wheels
- B60L2240/461—Speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2250/00—Driver interactions
- B60L2250/26—Driver interactions by pedal actuation
- B60L2250/28—Accelerator pedal thresholds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The present invention relates to the regenerative braking energy reclaiming system and control method of a kind of electric automobile, belong to the technical field of electric automobile.Whether energy-recuperation system of the invention and control method, judge the opening value of accelerator pedal more than default aperture threshold value, if it does, the opening value based on accelerator pedal and rotating speed calculate driving torque is driven control by entire car controller；If it is not greater, opening value and rotating speed that entire car controller is based on accelerator pedal calculate feedback moment of torsion, and feedback moment of torsion is sent to electric machine controller；Electric machine controller is used to control the motor to generate electricity and export charging current to electrokinetic cell.System of the invention does not change existing machinery brake system structure, and cost is without increase, and passing through accelerator pedal controlled motor feedback moment of torsion can to a greater extent realize braking energy feedback so that the regenerative braking rate of recovery is significantly improved；And can realize carrying out dynamic control to feedback torque by accelerator pedal.
Description
Technical field
The present invention relates to the technical field of electric automobile, it is more particularly related to a kind of regeneration of electric automobile
Brake energy recovering system and control method.
Background technology
Electric automobile refers to, with vehicle power as power, to be travelled with power wheel, meets road traffic, security legislation
The vehicle of requirements.According to the species of power resources, electric automobile can simply be divided into pure electric automobile (BEV), mix
Close power vehicle (PHEV), fuel cell car (FCEV) three types.No matter for which type of electric automobile, braking
Can all be the important performance indexes of electric automobile, the recovery of regenerating braking energy is controlled in addition to it can improve comprehensive energy efficiency,
The caused mechanical wear such as machinery, hydraulic braking can also be reduced.But the motor braking energy feedback torque base of prior art
It is controlled in speed, braking light switch signal, during regenerative braking energy feedback, accelerator pedal is in and discharges shape completely
State.As shown in figure 1, the recovery operating mode of regenerating braking energy is divided into and slides feedback operating mode (accelerator pedal and system in the prior art
Dynamic pedal is in complete release conditions), feedback braking operating mode (accelerator pedal discharges completely, and brake pedal has certain aperture),
But the motor Return moment under both operating modes is fixed with speed and changed, it is impossible to realize dynamic regulation, energy recovery efficiency is also
Need further raising.
The content of the invention
In order to solve above-mentioned technical problem of the prior art, it is an object of the invention to provide a kind of electric automobile again
Raw brake energy recovering system and control method.
For the technical problem solved described in invention and goal of the invention is realized, present invention employs following technical scheme：
A kind of regenerative braking energy reclaiming system of electric automobile, the electric automobile includes entire car controller, motor control
Device processed, motor, electrokinetic cell, vehicle speed sensor and accelerator pedal jaw opening sensor；It is characterized in that：The speed sensing
Device is used to gather the rotating speed of wheel, and the accelerator pedal jaw opening sensor is used to gather the opening value of accelerator pedal；The vehicle
Whether controller is used to judge the opening value of the accelerator pedal more than default aperture threshold value, if opening value is opened more than default
Degree threshold value, opening value and rotating speed based on the accelerator pedal calculate driving torque and are driven control；If opening value is not
More than default aperture threshold value, the opening value and rotating speed that the entire car controller is based on the accelerator pedal calculate feedback moment of torsion,
And the feedback moment of torsion is sent to the electric machine controller；The electric machine controller is used to control the motor to generate electricity simultaneously
Correspond to the charging current of the feedback moment of torsion to electrokinetic cell output.
Wherein, the aperture threshold value is 15% (TBD).
Wherein, the electric automobile is pure electric automobile or hybrid vehicle.
The second aspect of the present invention, further relates to a kind of regenerating braking energy recycling and control method of electric automobile.
The control method is comprised the following steps：
The rotating speed of wheel is gathered using vehicle speed sensor, the aperture of accelerator pedal is gathered using accelerator pedal jaw opening sensor
Value；
Whether the opening value of the accelerator pedal is judged more than default aperture threshold value by entire car controller, if aperture
Value calculates driving torque and is driven control more than default aperture threshold value, opening value and rotating speed based on the accelerator pedal；
If opening value is not more than default aperture threshold value, the opening value and rotating speed that entire car controller is based on accelerator pedal calculate feedback torsion
Square, and the feedback moment of torsion is sent to electric machine controller；
Electric machine controller is used to control the motor to generate electricity and correspond to the feedback moment of torsion to electrokinetic cell output
Charging current charged with to electrokinetic cell.
Wherein, the aperture threshold value is 15% (TBD).
Wherein, the electric automobile is pure electric automobile or hybrid vehicle.
Compared with immediate prior art, the regenerative braking energy reclaiming system and controlling party of electric automobile of the invention
Method has the advantages that：
System of the invention does not change existing machinery brake system structure, and cost passes through accelerator pedal control without increase
Motor feedback moment of torsion can to a greater extent realize braking energy feedback so that the regenerative braking rate of recovery is significantly improved；And
It is capable of achieving to carry out dynamic control to feedback torque by accelerator pedal；When accelerator pedal discharges completely, Return moment compared with
Greatly, the original driving habit of driver is changed.
Brief description of the drawings
Fig. 1 is the graph of a relation that electric automobile energy reclaims moment of torsion and speed in the prior art.
Fig. 2 is the structured flowchart of the regenerative braking energy reclaiming system of electric automobile of the invention.
Fig. 3 is the relation that regenerating braking energy of the invention reclaims driving torque, feedback moment of torsion and speed (motor speed)
Figure.
Specific embodiment
Below with reference to specific embodiment to the regenerating braking energy recycling and control method of electric automobile of the present invention
It is further elaborated, to being made to technical scheme more complete and clearly being illustrated.
Embodiment 1
Automobile described in the present invention refers to motor vehicles, for example can include car, SUV, bus, bus,
The motor vehicles of the diversified forms such as commercial vehicle, truck, offroad vehicle.Electric automobile is mainly finger pure electric automobile or hybrid power vapour
Car.
As shown in Fig. 2 the regenerative braking energy reclaiming system of the electric automobile of the present embodiment, including entire car controller, electricity
Machine controller, motor, electrokinetic cell, vehicle speed sensor and accelerator pedal jaw opening sensor.Vehicle speed sensor is used to gather
The rotating speed of wheel, accelerator pedal jaw opening sensor is used to gather the opening value of accelerator pedal；Entire car controller is used to judge described
Whether the opening value of accelerator pedal is more than default aperture threshold value, if opening value is more than default aperture threshold value and (can be set to
15% (TBD)), based on the MAP shown in Fig. 3, opening value and rotating speed according to accelerator pedal calculate driving torque and are driven
Control；If opening value is not more than default aperture threshold value, based on the MAP shown in Fig. 3, entire car controller is according to accelerator pedal
Opening value and rotating speed calculate feedback moment of torsion, and the feedback moment of torsion is sent to the electric machine controller；The motor control
Device is used to control the motor to generate electricity and export the charging current corresponding to the feedback moment of torsion to the electrokinetic cell.This
The brake energy recovering system of embodiment sets 0 moment of torsion intermediate zone by low accelerator pedal opening amount region, more than the region real
Existing drive control, the region implemented below feedback control, driving torque and feedback moment of torsion are realized by controlling accelerator pedal aperture
Dynamic regulation；When regenerative braking Return moment can meet deceleration demand, can be to greatest extent using motor to braking energy
Feedback control is carried out, the recovering effect of similar decoupling type brake energy recovering system is realized.
The regenerating braking energy recycling and control method of the present embodiment is comprised the following steps：
1. the rotating speed of wheel is gathered using vehicle speed sensor, using opening for accelerator pedal jaw opening sensor collection accelerator pedal
Angle value；
2. whether the opening value of the accelerator pedal is judged more than default aperture threshold value by entire car controller, if opened
Angle value is more than default aperture threshold value, and opening value and rotating speed based on the accelerator pedal calculate driving torque and be driven control
System；If opening value is not more than default aperture threshold value, the opening value and rotating speed that entire car controller is based on accelerator pedal are calculated back
Feedback moment of torsion, and the feedback moment of torsion is sent to electric machine controller；
3. electric machine controller is used to control the motor to generate electricity and turned round corresponding to the feedback to electrokinetic cell output
The charging current of square charges with to electrokinetic cell.
The system of the present embodiment does not change existing machinery brake system structure, and cost passes through accelerator pedal control without increase
Motor feedback moment of torsion processed can to a greater extent realize braking energy feedback, and can realize big to feedback moment of torsion by accelerator pedal
It is small to carry out dynamic control；When accelerator pedal discharges completely, Return moment is larger, changes the original driving habit of driver.This
The regenerating braking energy that invention is related to reclaims PHEV the and EV entire car controllers that control technology is applied to our company, and empirical tests find
Can cause that the regenerative braking rate of recovery is significantly improved, with good practicality effect.
For the ordinary skill in the art, specific embodiment is that the present invention is exemplarily described,
The obvious present invention is implemented and is not subject to the restrictions described above, as long as employ method of the present invention design entering with technical scheme
The improvement of capable various unsubstantialities, or it is not improved by it is of the invention design and technical scheme directly apply to other occasions
, within protection scope of the present invention.
Claims (6)
1. a kind of regenerative braking energy reclaiming system of electric automobile, the electric automobile includes entire car controller, motor control
Device, motor, electrokinetic cell, vehicle speed sensor and accelerator pedal jaw opening sensor；It is characterized in that：The vehicle speed sensor
Rotating speed for gathering wheel, the accelerator pedal jaw opening sensor is used to gather the opening value of accelerator pedal；The vehicle control
Whether device processed is used to judge the opening value of the accelerator pedal more than default aperture threshold value, if opening value is more than default aperture
Threshold value, opening value and rotating speed based on the accelerator pedal calculate driving torque and are driven control；If opening value is little
In default aperture threshold value, the opening value and rotating speed that the entire car controller is based on the accelerator pedal calculate feedback moment of torsion, and
The feedback moment of torsion is sent to the electric machine controller；The electric machine controller be used to controlling the motor generate electricity and to
Charging current of the electrokinetic cell output corresponding to the feedback moment of torsion.
2. the regenerative braking energy reclaiming system of electric automobile according to claim 1, it is characterised in that：The aperture door
Limit value is 15%.
3. the regenerative braking energy reclaiming system of electric automobile according to claim 1, it is characterised in that：The electronic vapour
Car is pure electric automobile or hybrid vehicle.
4. the regenerating braking energy recycling and control method of a kind of electric automobile, it is characterised in that：Comprise the following steps：
The rotating speed of wheel is gathered using vehicle speed sensor, the opening value of accelerator pedal is gathered using accelerator pedal jaw opening sensor；
Whether the opening value of the accelerator pedal is judged more than default aperture threshold value by entire car controller, if opening value is big
In default aperture threshold value, opening value and rotating speed based on the accelerator pedal calculate driving torque and are driven control；If
Opening value is not more than default aperture threshold value, and the opening value and rotating speed that entire car controller is based on accelerator pedal calculate feedback moment of torsion,
And the feedback moment of torsion is sent to electric machine controller；
Electric machine controller is used to control the motor to generate electricity and to electrokinetic cell output filling corresponding to the feedback moment of torsion
Electric current charges with to electrokinetic cell.
5. the regenerating braking energy recycling and control method of electric automobile according to claim 4, it is characterised in that：It is described to open
Degree threshold value is 15%.
6. the regenerating braking energy recycling and control method of electric automobile according to claim 5, it is characterised in that：The electricity
Electrical automobile is pure electric automobile or hybrid vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710269020.2A CN106926710A (en) | 2017-04-21 | 2017-04-21 | The regenerative braking energy reclaiming system and control method of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710269020.2A CN106926710A (en) | 2017-04-21 | 2017-04-21 | The regenerative braking energy reclaiming system and control method of electric automobile |
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| Publication Number | Publication Date |
|---|---|
| CN106926710A true CN106926710A (en) | 2017-07-07 |
Family
ID=59437080
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| CN201710269020.2A Pending CN106926710A (en) | 2017-04-21 | 2017-04-21 | The regenerative braking energy reclaiming system and control method of electric automobile |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108340787A (en) * | 2018-01-02 | 2018-07-31 | 北京理工大学 | A kind of list accelerator pedal brake control method and vehicle |
| CN108790945A (en) * | 2018-06-12 | 2018-11-13 | 北京新能源汽车股份有限公司 | A kind of electric vehicle single pedal brake control method, device, equipment and automobile |
| CN108909459A (en) * | 2018-07-27 | 2018-11-30 | 爱驰汽车有限公司 | Energy reclaiming method, system and the electric car of electric car |
| CN109515201A (en) * | 2018-12-13 | 2019-03-26 | 北京航空航天大学 | A kind of electric automobile energy recycling and control device based on accelerator pedal signal |
| CN109895637A (en) * | 2019-03-26 | 2019-06-18 | 奇瑞新能源汽车技术有限公司 | A kind of control method promoting electric car cruising ability |
| CN111959285A (en) * | 2020-08-10 | 2020-11-20 | 安徽江淮汽车集团股份有限公司 | Electric vehicle energy recovery method, equipment, storage medium and device |
| CN112428829A (en) * | 2020-11-30 | 2021-03-02 | 合肥巨一动力系统有限公司 | Braking energy feedback control method for electric automobile |
| CN113002319A (en) * | 2019-12-20 | 2021-06-22 | 北京宝沃汽车股份有限公司 | Vehicle control method and device and vehicle |
| CN113895239A (en) * | 2021-09-22 | 2022-01-07 | 三一汽车制造有限公司 | Electric working machine and energy recovery method and device thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108340787A (en) * | 2018-01-02 | 2018-07-31 | 北京理工大学 | A kind of list accelerator pedal brake control method and vehicle |
| CN108790945A (en) * | 2018-06-12 | 2018-11-13 | 北京新能源汽车股份有限公司 | A kind of electric vehicle single pedal brake control method, device, equipment and automobile |
| CN108790945B (en) * | 2018-06-12 | 2020-07-21 | 北京新能源汽车股份有限公司 | Single-pedal brake control method, device and equipment for electric automobile and automobile |
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| CN109895637A (en) * | 2019-03-26 | 2019-06-18 | 奇瑞新能源汽车技术有限公司 | A kind of control method promoting electric car cruising ability |
| CN113002319A (en) * | 2019-12-20 | 2021-06-22 | 北京宝沃汽车股份有限公司 | Vehicle control method and device and vehicle |
| CN111959285A (en) * | 2020-08-10 | 2020-11-20 | 安徽江淮汽车集团股份有限公司 | Electric vehicle energy recovery method, equipment, storage medium and device |
| CN112428829A (en) * | 2020-11-30 | 2021-03-02 | 合肥巨一动力系统有限公司 | Braking energy feedback control method for electric automobile |
| CN112428829B (en) * | 2020-11-30 | 2022-04-01 | 合肥巨一动力系统有限公司 | Braking energy feedback control method for electric automobile |
| CN113895239A (en) * | 2021-09-22 | 2022-01-07 | 三一汽车制造有限公司 | Electric working machine and energy recovery method and device thereof |
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